Liam:
You're insecure, don't know what for
You're turning heads when you walk through the do-o-or
Don't need make-up - to cover up
Being the way that you are is eno-o-ough

Harry :
Everyone else in the room can see it
Everyone else but yo-ou

Baby you light up my world like nobody else
The way that you flip your hair gets me overwhelmed
But when you smile at the ground, it ain't hard to tell
You don't know
Oh oh
You don't know you're beautiful!
If only you saw what I can see
You'll understand why I want you so desperatley
Right now I'm looking at you and I can't believe
You don't know
Oh oh
You don't know you're beautiful!
Oh oh
That's what makes you beautiful!

So c-come on, you got it wrong
To prove I'm right I put it in a so-o-ong
I don't know why, you're being shy
And turn away when I look in to your e-e-eyes

Everyone else in the room can see it
Everyone else but yo-ou

Baby you light up my world like nobody else
The way that you flip your hair gets me overwhelmed
But when you smile at the ground, it ain't hard to tell
You don't know
Oh oh
You don't know you're beautiful!
If only you saw what I can see
You'll understand why I want you so desperatley
Right now I'm looking at you and I can't believe
You don't know
Oh oh
You don't know you're beautiful!
Oh oh
That's what makes you beautiful!

Na na na na na na naaaa na na,
Na na na na na na.
Na na na na na na naaaa na na,
Na na na na na na.

Baby you light up my world like nobody else
The way that you flip your hair gets me overwhelmed
But when you smile at the ground, it ain't hard to tell
You don't know
Oh oh
You don't know you're beautiful!

Baby you light up my world like nobody else
The way that you flip your hair gets me overwhelmed
But when you smile at the ground, it ain't hard to tell
You don't know
Oh oh
You don't know you're beautiful!
If only you saw what I can see
You'll understand why I want you so desperatley
Right now I'm looking at you and I can't believe
You don't know
Oh oh
You don't know you're beautiful!
Oh oh
You don't know you're beautiful!
Oh oh
That's what makes you beautiful!